It's also possible that the fanfiction could develop a plot where Deidara has an ulterior motive for training Naruto. Maybe he's trying to use Naruto as a pawn in a larger scheme against the Hidden Leaf Village. This would create a lot of drama as Naruto uncovers the truth and has to decide what to do about it.
Perhaps there could be a plot development where other characters react to Naruto's training with Deidara. For example, Sasuke might be suspicious or even jealous of Naruto's newfound skills. This could create tension between the two characters and lead to some exciting confrontations.
One possible plot development could be that they initially fight against each other as enemies, not knowing their relation. Then, through some kind of accident or revelation, they find out they are brothers. This could lead to a lot of internal conflict for both of them, especially for Deidara who has been on the 'wrong side' in the eyes of Konoha. Another development could be that there is a third party who knows about their relation and tries to use it for their own gain, forcing Naruto and Deidara to work together to overcome this threat.
In some fanfictions, Deidara might give Naruto training on explosive jutsu control. Since Deidara is known for his explosive clay techniques, he could potentially teach Naruto how to better handle and utilize explosive elements in combat.
One possible plot development could be that Naruto quickly masters basic chakra control under Jiraiya's strict training. This early success might make Naruto overconfident, leading to a challenge where he realizes he still has a lot to learn. For example, he might face a powerful opponent in a sparring match arranged by Jiraiya and struggle initially, teaching him the importance of continuous training.
One possibility is that Naruto's friends launch a rescue mission. They would use their unique skills, like Sasuke's Sharingan or Sakura's medical ninjutsu combined with her combat skills, to find and save Naruto.
Perhaps Asuma helps Naruto to better control his chakra in unique ways. He could introduce some special training methods that are not taught in the regular academy. This would give Naruto an edge in the exams, like being able to use more powerful jutsus without exhausting his chakra too quickly.
In this 'naruto gets poisoned fanfiction', Naruto could also try to fight the poison using his own chakra. He might enter a state of inner struggle where he has to battle the effects of the poison on his body while still trying to protect the village. His Nine - Tails chakra could play a role, either helping him resist the poison or making the situation more complicated if it reacts badly with the poison.
One possible plot development could be that after saving Naruto, Madara tries to mentor him. He sees Naruto's potential and wants to shape him into an even greater ninja, sharing his own knowledge and skills that have been honed over years.
Another plot development could be that Naruto's Enton Release attracts the attention of an ancient and powerful organization. They see Naruto as a key to achieving their own goals, whether it's world domination or unlocking some sort of ancient power. Naruto has to fight against this organization while also trying to understand the full extent of his Enton Release and how it can be used to stop them.
One possible plot development is that Naruto gets to experience a different kind of family dynamic. Kurenai could introduce him to her friends in the village, expanding his social circle. This could help Naruto feel more integrated into the village community.
One possible plot development could be Naruto using his new jutsu to break Yugito free from an enemy's trap. Another could be that Naruto's words break Yugito's negative mindset.